/Engine/Source/Runtime/Core/Public/Containers/UnrealString.h
Format the specified string using the specified arguments. Replaces instances of {0} with indices from the given array matching the index specified in the token
A string containing the formatted text
static [FString](API\Runtime\Core\Containers\FString) Format ( const TCHAR * InFormatString, const FStringFormatOrderedArguments & InOrderedArguments )